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If a crash occurred as a result to a write to unwritable memory, it is reason to suggest exploitability. The processor checks for a bad write by disassembling the command that caused the crash by piping the raw bytes near the instruction pointer through objdump. This allows the processor to see if the instruction that caused the crash is a write to memory and where the target of the address is located. R=ivanpe@chromium.org Review URL: https://codereview.chromium.org/1273823004 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1497 4c0a9323-5329-0410-9bdc-e9ce6186880e
83 lines
3.3 KiB
C++
83 lines
3.3 KiB
C++
// Copyright (c) 2010 Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// exploitability_engine.h: Generic exploitability engine.
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//
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// The Exploitability class is an abstract base class providing common
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// generic methods that apply to exploitability engines for specific platforms.
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// Specific implementations will extend this class by providing run
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// methods to fill in the exploitability_ enumeration of the ProcessState
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// for a crash.
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//
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// Author: Cris Neckar
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#ifndef GOOGLE_BREAKPAD_PROCESSOR_EXPLOITABILITY_H_
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#define GOOGLE_BREAKPAD_PROCESSOR_EXPLOITABILITY_H_
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#include "google_breakpad/common/breakpad_types.h"
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#include "google_breakpad/processor/minidump.h"
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#include "google_breakpad/processor/process_state.h"
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namespace google_breakpad {
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class Exploitability {
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public:
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virtual ~Exploitability() {}
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static Exploitability *ExploitabilityForPlatform(Minidump *dump,
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ProcessState *process_state);
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// The boolean parameter signals whether the exploitability engine is
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// enabled to call out to objdump for disassembly. This is disabled by
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// default. It is used to check the identity of the instruction that
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// caused the program to crash. This should not be enabled if there are
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// portability concerns.
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static Exploitability *ExploitabilityForPlatform(Minidump *dump,
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ProcessState *process_state,
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bool enable_objdump);
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ExploitabilityRating CheckExploitability();
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bool AddressIsAscii(uint64_t);
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protected:
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Exploitability(Minidump *dump,
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ProcessState *process_state);
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Minidump *dump_;
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ProcessState *process_state_;
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SystemInfo *system_info_;
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private:
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virtual ExploitabilityRating CheckPlatformExploitability() = 0;
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};
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} // namespace google_breakpad
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#endif // GOOGLE_BREAKPAD_PROCESSOR_EXPLOITABILITY_H_
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